VADER Sentiment Analysis. VADER (Valence Aware Dictionary and sEntiment Reasoner) is a lexicon and rule-based sentiment analysis tool that is specifically attuned to sentiments expressed in social media, and works well on texts from other domains.
No. The NYT data is not a lexicon - it is a set of news stories from the New York Times. It's used for testing the accuracy of VADER sentiment against text from printed news.
I was wondering if there was an easy way to switch from the vader_lexicon to the nyt lexicon which is referenced on this github.